RHABDOWEISIA. 



7' 



upper part closely crenulate-denticulate with projecting cells ; 

 areolation in upper part, on each side of nerve, in 10-13 rows of 

 larger, irregularly quadrate or hexagonal, obscure cells 14-18 // 

 wide. Capsule a little larger, reddish ; peristome teeth narrow, 

 erect, reddish. 



Hab. Shady rock crevices. Rare. Fr. summer. 



Much like the last and often confused with it, but easily recognised by the leaves 

 much broader in the upper part with 'arger, more obscure cells. In favourable 

 situations it becomes so robust as to resemble closely Barbula unguiculata or 

 Trichostomum littorale. 



18. OYNODONTIUM Schp. 



Plants taller than in Rhabdoweisia, leaves with recurved 

 margins, long, wider at base, gradually and longly acuminated 

 in the upper part ; cells often papillose. Fruit larger, smooth 

 or striate, symmetrical or more frequently inclined and unequal, 

 often strumose, on a longer seta. Peristome variable. Lid 

 longly subulate. 



Resembling Dicranum in the fruit, this genus differs in the 

 leaves without distinct angular cells, usually erecto-patent, and 

 crisped when dry. C. Bruntoni unites it with Dicranoweisia, but 

 the denticulate leaves with recurved margins serve to distinguish 

 it, and the angular cells are not distinct from the rest. 



A continental species, C. Schisti Lindb., forms a transition 

 between this and the last genus, having the leaves almost entire, 

 with recurved margins, the capsule striate and equal, the peristome 

 more perfect and less fugacious than in Rhabdoweisia. 



{Capsule distinctly strumose at neck 2 

 Capsule not strumose 4 



/Capsule smooth ; leaves not papillose 3 



\ Capsule furrowed when dry; leaves papillose 2* strumiferum 



{Leaves gradually lanceolate from an oval or oblong base j virens 

 Leaves suddenly subulate from a wide, obovate base j*. Wahlenbergii 



/ Capsule when dry faintly and irregularly striate only i. Bruntoni 



4\Capsule when dry distinctly and regularly furrowed 5 



/Leaves rather obtuse, strongly papillose on both sides 2* gracilescens 



' \ Leaves acute, faintly papillose at back only 2. polycarpum 



1. Cynodontium Bruntoni B. & S. {Dicranum Bruntom 



Sm. ; Dicranoweisia Bruntoni Schp., Syn. ; Oncophorus 



Bruntoni Lindb., Braithw. Br. M. Fl.) (Tab. XIV. D.). 



Densely tufted in compact soft yellowish, or dull green 

 cushions, i-i£ inches high. Lower leaves elongate-lanceolate, 

 upper longer, from an oblong base gradually narrowed upwards 



